Modernization of radio communication equipment of the "Altai-3M"

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Uploaded: 12.02.2008
Content: my_diplom.rar (999,24 kB)

Description

Special part: "Calculation of the trunk and the choice of channel telephone tract"
This project contains unique information taken directly from documents apply to equipment manufacturers. Also, at the time the author spent much of his time searching for and processing the necessary information in the Internet.
PP contains all the necessary drawings vypolnennyev proramma Compass 3D LT, and also referred to in text form, if necessary remarks on the protection of the DP.

For a long time the only kind of public mobile in the former USSR was radio-telephone "Altai". Even in 1994, it operated a network of 120 cities, the number of subscribers sostavi.la 53% of the total number of mobile park in Russia.

Additional information

TABLE OF CONTENTS

Введение…………………………………………………………………………….12
1. General .............................................................................. .... 17
1.1. Brief description of radio communication equipment operating at предприятии…………………………………………………………………….18
1.1.1. Dispatch radio system ............................................. ... 18
1.1.2. Microwave Communication ............................................................... .... 22
1.1.3. Radiotelephone system with a large public area обслуживания………………………………………………………………….23
1.2. Radiotelephone system "Altai-3M" ................................. .... 27
1.2.1. Historical information about the radiotelephone system
"Altai-3M" .............................................................................. 27
1.2.2. Technical data of the "Altai-3M" ................................. ..... 28
1.2.3. Design and operation of the "Altai-3M" .................................... 32
1.2.4. Transceiver equipment CA ....................................... .... 35
1.2.5. Antenna feeders SDLC .......................................... ..36
1.2.6. Switching equipment central station ..................... .... 39
1.3. Description of the graphic ......................................................... .47
2. Analytical review ..................................................................... 48
2.1. Justification upgrading switching equipment
«Алтай-3М»…………………………………………………………………………49
2.1.1. Switching equipment standard "Altai"
Ltd. «КомпанияСиТи»…………………………………………………………......54
2.1.2. Switching equipment firm "INSTALL" ........................... 56
2.1.3. EWSD switching equipment firm Siemens ............ ... 59
2.1.4. Switching equipment "Quantum-E" firm
"Quantum Intercom" ........................................................................... ..62
3.1. Special part ..................................................................... ... 68
3.1. Calculation of parameters of a trunk and a choice of channel telephone tract ...................................................... ..69
3.1.1. Calculation of the primary and secondary transmission parameter
chains of communication cables .................................................................. ... 71
3.1.1.1. Calculation of resistance ............................................. ...... 71
3.1.1.2. Inductance calculation circuit ...................................................... ... 73
3.1.1.3. Calculation of capacitance circuits of communication lines ............................................. ... 74
3.1.1.4. The calculation of the attenuation coefficient ................................................ ... 75
3.1.1.5. Calculation of wave resistance ................................................ ..76
3.2. The calculation of the maximum distance (range) between the central station and mobile subscriber station system "Altai-3M" ......... ..80
4. The economic part .................................................................. ....... 85
4.1. Calculation of economic indicators ................................................ .... 86
4.1.1. Capital costs ............................................................... .... 86
4.1.2. Annual operating expenses .......................................... ...... 88
4.2. Operating income ................................................... .91
4.3. Profits from the sale of services ......................................................... .92
4.4. Payback period ........................................................................ .92
4.5. Рентабельность……………………………………………………………….....94
5. Safety and environmental project ............................................. ..... 96
5.1. Security Project ..................................................

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